60752

Silica gel Inorganic Sorbent

high-purity grade (w/ Ca, ~0.1%), 230-400 mesh

• CAS-Nummer: 112926-00-8
• UNSPSC Code: 23201100
• PubChem Substance ID: 329759203
• NACRES: SB.52
• EC Number: 231-545-4
• MDL number: MFCD00011232

Eigenschaften

• Produktname: Kieselgel, high-purity grade (w/ Ca, ~0.1%), pore size 60 Å, 230-400 mesh particle size
• grade: high-purity grade (w/ Ca, ~0.1%)
• Quality Segment: 200
• description: activity acc. to Brockmann and Schodder 2 - 3, for flash chromatography, for preparative liquid chromatography
• form: powder
• manufacturer/tradename: Sigma-Aldrich
• technique(s): LPLC: suitable
• surface area: 500 m²/g
• matrix: Silica
• matrix active group: silica
• particle size: 230-400 mesh, 40-63 μm
• pore size: 0.8 cm³/g pore volume, 60 Å
• bp: 2230 °C
• mp: >1600 °C
• separation technique: hydrophilic interaction (HILIC)
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Beschreibung

General description

Silica gel is a rigid 3D network of colloidal silica. It is exclusively used as a support material for the active titanium (III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation leading to form uniform polymer particles with narrow particle size distribution and high bulk density. Silica gel is classified as below:
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction

Application

Silica gel may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.[1]

Sicherheitshinweise

• Lagerklasse: 13 - Non Combustible Solids
• wgk: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)